1.) A synthetic diamond probe for both low-energy mammography
X-rays and high-energy electron therapy beamsThe arrangement of
applicability limited of Conventional radiation dosimeters commonly
used for photon and electron dosimetry, the air ionization chambers
and silicon is limited to the properties of respective sensor
elements. The sensing element of the radiation and its housing
should have as properties to that of human tissue to qualify as
ideal radiation dosimeter.
2.) A free-airionizationchamberwithalargeaperturediaphragmThe
standards laboratories uses free-air ionization chamber for the
total measurements of air kerma and X-ray exposure.Using the
collector electrode to the mass of air in the ionization volume and
the ratio of the signal charge, the Air kerma and exposure at the
diaphragm aperture on the reference plane can be obtained.
3.)
Partialbodyirradiationofsmalllaboratoryanimalswithanndustrial
X-raytubeSmall water phantom is needed for basic dosimetry of the
X-ray tube. The requirements for cross sectional profiles up to
80mm wide radiation fields with a geometrical accuracy of better
than1mm and 100mm to depth measure depth dose curves up.
4.) Effect
ofparticlesize,fillerloadingsandx-raytubevoltageonthetransmitted
x-raytransmissionintungstenoxideepoxy compositesIn x-ray
attenuation no significant variations at higher x-ray beam energy
(60 and102kV). The attenuation of lower x-ray beam energy (26 and
30 kV) is less effective than the x-ray absorption is higher for a
nano structured CuO compound. There is a lower x-ray absorption to
the micro structured counterpart for low energy x-ray beams
(25and30kV) than to the nano structured CuO compound
5.) Determination of half value layers of X-ray equipment using
computed radiography imaging platesThe HVL is the thinness of the
aluminum (Al) absorber that is required to increase the output to
half its initial value.In terms of half value layer (HVL), the beam
quality is expressed while the X-ray output is expressed in terms
of the air kerma (K ) per unit tube filling (mAs) at distance from
the tube focus. X-ray output and the beam quality is used to is
characterized the diagnostic X-ray beam.
6.) Construction and calibration of a multipurpose instrument to
simultaneously measure dose, voltage and half-value layer in X-ray
emission equipmentMany countries to issue protective regulation and
guidelines for such X-ray procedures due to the increasing use of
ionizing radiation in medicine.
7.) Radiation transmissionofcolemanite,tincalconiteandulexitefor
6and18MVX-raysbyusinglinearacceleratorIn radiation shielding it is
essential for some fields to find the accurate value of mm in
X-rays and g-rays.Boron ores such as Colemanite, tincalconite and
ulexite are used in control bars of nuclear and thermal and fast
neutron shielding due it is cheaper and more practical.
8.) Synthetic diamond X-ray dosimeter for radiotherapyWithout
corrections the dose can be obtain when it when it has all the
desirable characteristics for radiotherapy such as small
dimensions, high-spatial resolution; high sensitivity, as the dose
deposited in a small volume is likely to be small; energy and dose
rate independence; fast response; and tissue equivalence.
9.) Energy spectra in water for the 6 MV X-ray therapeutic beam
generated by Clinac-2300 linacWater absorbed dose determination and
the knowledge in energy spectrum is required to complete the
specification of the radiation quality and in oncological centers,
the teleradio therapy that is applied is about 6 MV X-ray.
